Mount Sinai South Nassau: labor and delivery in Oceanside, NY
Mount Sinai South Nassau is a hospital in Oceanside, Nassau County, New York that delivers babies. It handled 1,595 deliveries in 2025. Of first-time mothers with a full-term, single, head-down baby, 19% delivered by C-section (507 such births). That is below the New York rate of 29% and below the U.S. median of 26%.
- 19%First-birth C-section rate
- 1,595Deliveries in 2025
- YesBirthing-Friendly designation
- 521Severe complications per 10,000 deliveries
- 2 of 5Patient survey stars
- 3 of 5Overall hospital stars
Birth services at Mount Sinai South Nassau
- Newborn care: Level II special care nursery
- Midwifery care
- Childbirth and parenting classes
- High-risk pregnancy and maternal-fetal medicine care
Tour, class and care-team details are on the hospital's maternity page.
Address and phone
One Healthy Way
Oceanside, NY 11572
Nassau County
Call (516) 632-3000 Directions
- Emergency department: Yes
- Hospital type: Acute Care hospital
- Ownership: Nonprofit, Private
How Mount Sinai South Nassau compares
| Measure, 2025 | This hospital | New York | U.S. |
|---|---|---|---|
| First-birth C-section rate | 19% | 29% | 26% (median) |
| Severe complications per 10,000 deliveries | 521 | 374 | 285 |
| Severe complications, not counting transfusion-only cases, per 10,000 | 105 | – | 68 |
Severe-complication ranking among U.S. hospitals: Bottom 25% (most complications).
In New York, Mount Sinai South Nassau has the 12th-lowest first-birth C-section rate of 98 hospitals that report one.
The first-birth C-section rate counts first-time mothers with a full-term, single, head-down baby. Complication rates are adjusted for patient risk. Our data explains each number.
What patients say
- Patient survey summary: 2 of 5 stars
- 61% of patients would definitely recommend this hospital
- 58% of patients rated this hospital 9 or 10 out of 10
Survey results cover all patients at the hospital, not only maternity patients.
Birthing-Friendly designation
Mount Sinai South Nassau holds the federal Birthing-Friendly designation. Hospitals earn it by taking part in a perinatal quality collaborative and following maternal safety practices.
Other hospitals that deliver babies near Oceanside
| Hospital | City | Miles | First-birth C-section rate | Deliveries, 2025 | Birthing-Friendly |
|---|---|---|---|---|---|
| Mercy Medical Center | Rockville Centre | 2.5 | 26% | 952 | Yes |
| Nassau University Medical Center | East Meadow | 6.6 | 51% | 276 | Yes |
| Long Island Jewish Medical Center | New Hyde Park | 7.0 | 26% | 6,959 | Yes |
| St John's Episcopal Hospital at South Shore | Far Rockaway | 7.3 | 23% | 435 | Yes |
| North Shore University Hospital | Manhasset | 9.7 | 32% | 5,124 | Yes |
| Queens Hospital Center | Jamaica | 10 | 30% | 1,026 | Yes |
More in Nassau County
- Nassau University Medical Center (East Meadow)
- North Shore University Hospital (Manhasset)
- Long Island Jewish Medical Center (New Hyde Park)
- Mercy Medical Center (Rockville Centre)
All hospitals in Oceanside · Nassau County · All New York hospitals